4
Model UT233: OPERATING MANUAL
Safety Information
This Meter complies with the standards IEC61010: in
pollution degree 2, overvoltage category (CAT. III 600V,
CAT IV 300V) and double insulation.
CAT. III: Distribution level, fixed installation, with smaller
transient overvoltages than CAT. IV.
CAT IV: Primary supply level, overhead lines, cable
systems.
Use the Meter only as specified in this operating manual,
otherwise the protection provided by the Meter may be
impaired.
In this manual, a
Warning
identifies conditions and
actions that pose hazards to the user, or may damage
the Meter or the equipment under test.
A
Note
identifies the information that user should pay
attention to.
International electrical symbols used on the Meter and
l
l
l
l
in this Operating Manual are explained on page 6.
Rules For Safe Operation
Warning
To avoid possible electric shock or personal injury,
and to avoid possible damage to the Meter or to the
equipment under test, adhere to the following rules:
Before using the Meter inspect the case. Do
not use the Meter if it is damaged or the case
(or part of the case) is removed. Look for cracks
or missing plastic. Pay attention to the insulation
around the connectors.
Inspect the test leads for damaged insulation
or exposed metal. Replace damaged test leads
with identical model number or electrical
specifications before using the Meter.
Do not apply more that the rated voltage, as
marked on the Meter.
When measurement has been completed,
disconnect the connection between the test
leads and the circuit under test, remove the
